diff options
Diffstat (limited to 'guix/build')
| -rw-r--r-- | guix/build/download.scm | 27 | ||||
| -rw-r--r-- | guix/build/profiles.scm | 149 | ||||
| -rw-r--r-- | guix/build/syscalls.scm | 32 |
3 files changed, 204 insertions, 4 deletions
diff --git a/guix/build/download.scm b/guix/build/download.scm index 2e0b019d38..65d18eb839 100644 --- a/guix/build/download.scm +++ b/guix/build/download.scm @@ -19,7 +19,7 @@ (define-module (guix build download) #:use-module (web uri) - #:use-module (web client) + #:use-module ((web client) #:hide (open-socket-for-uri)) #:use-module (web response) #:use-module (guix ftp-client) #:use-module (guix build utils) @@ -30,7 +30,8 @@ #:use-module (srfi srfi-26) #:use-module (ice-9 match) #:use-module (ice-9 format) - #:export (open-connection-for-uri + #:export (open-socket-for-uri + open-connection-for-uri resolve-uri-reference maybe-expand-mirrors url-fetch @@ -195,6 +196,25 @@ host name without trailing dot." (add-weak-reference record port) record))) +(define (open-socket-for-uri uri) + "Return an open port for URI. This variant works around +<http://bugs.gnu.org/15368> which affects Guile's 'open-socket-for-uri' up to +2.0.11 included." + (define rmem-max + ;; The maximum size for a receive buffer on Linux, see socket(7). + "/proc/sys/net/core/rmem_max") + + (define buffer-size + (if (file-exists? rmem-max) + (call-with-input-file rmem-max read) + 126976)) ;the default for Linux, per 'rmem_default' + + (let ((s ((@ (web client) open-socket-for-uri) uri))) + ;; Work around <http://bugs.gnu.org/15368> by restoring a decent + ;; buffer size. + (setsockopt s SOL_SOCKET SO_RCVBUF buffer-size) + s)) + (define (open-connection-for-uri uri) "Like 'open-socket-for-uri', but also handle HTTPS connections." (define https? @@ -218,6 +238,9 @@ host name without trailing dot." (thunk))))))) (with-https-proxy (let ((s (open-socket-for-uri uri))) + ;; Buffer input and output on this port. + (setvbuf s _IOFBF %http-receive-buffer-size) + (if https? (tls-wrap s (uri-host uri)) s))))) diff --git a/guix/build/profiles.scm b/guix/build/profiles.scm new file mode 100644 index 0000000000..6e316d5d2c --- /dev/null +++ b/guix/build/profiles.scm @@ -0,0 +1,149 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2015 Ludovic Courtès <ludo@gnu.org> +;;; +;;; This file is part of GNU Guix. +;;; +;;; GNU Guix is free software; you can redistribute it and/or modify it +;;; under the terms of the GNU General Public License as published by +;;; the Free Software Foundation; either version 3 of the License, or (at +;;; your option) any later version. +;;; +;;; GNU Guix is distributed in the hope that it will be useful, but +;;; WITHOUT ANY WARRANTY; without even the implied warranty of +;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;;; GNU General Public License for more details. +;;; +;;; You should have received a copy of the GNU General Public License +;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. + +(define-module (guix build profiles) + #:use-module (guix build union) + #:use-module (guix build utils) + #:use-module (guix search-paths) + #:use-module (srfi srfi-26) + #:use-module (ice-9 ftw) + #:use-module (ice-9 match) + #:use-module (ice-9 pretty-print) + #:export (ensure-writable-directory + build-profile)) + +;;; Commentary: +;;; +;;; Build a user profile (essentially the union of all the installed packages) +;;; with its associated meta-data. +;;; +;;; Code: + +(define (abstract-profile profile) + "Return a procedure that replaces PROFILE in VALUE with a reference to the +'GUIX_PROFILE' environment variable. This allows users to specify what the +user-friendly name of the profile is, for instance ~/.guix-profile rather than +/gnu/store/...-profile." + (let ((replacement (string-append "${GUIX_PROFILE:-" profile "}"))) + (match-lambda + ((search-path . value) + (let* ((separator (search-path-specification-separator search-path)) + (items (string-tokenize* value separator)) + (crop (cute string-drop <> (string-length profile)))) + (cons search-path + (string-join (map (lambda (str) + (string-append replacement (crop str))) + items) + separator))))))) + +(define (write-environment-variable-definition port) + "Write the given environment variable definition to PORT." + (match-lambda + ((search-path . value) + (display (search-path-definition search-path value #:kind 'prefix) + port) + (newline port)))) + +(define (build-etc/profile output search-paths) + "Build the 'OUTPUT/etc/profile' shell file containing environment variable +definitions for all the SEARCH-PATHS." + (mkdir-p (string-append output "/etc")) + (call-with-output-file (string-append output "/etc/profile") + (lambda (port) + ;; The use of $GUIX_PROFILE described below is not great. Another + ;; option would have been to use "$1" and have users run: + ;; + ;; source ~/.guix-profile/etc/profile ~/.guix-profile + ;; + ;; However, when 'source' is used with no arguments, $1 refers to the + ;; first positional parameter of the calling scripts, so we can rely on + ;; it. + (display "\ +# Source this file to define all the relevant environment variables in Bash +# for this profile. You may want to define the 'GUIX_PROFILE' environment +# variable to point to the \"visible\" name of the profile, like this: +# +# GUIX_PROFILE=/path/to/profile +# source /path/to/profile/etc/profile +# +# When GUIX_PROFILE is undefined, the various environment variables refer +# to this specific profile generation. +\n" port) + (let ((variables (evaluate-search-paths (cons $PATH search-paths) + (list output)))) + (for-each (write-environment-variable-definition port) + (map (abstract-profile output) variables)))))) + +(define (ensure-writable-directory directory) + "Ensure DIRECTORY exists and is writable. If DIRECTORY is currently a +symlink (to a read-only directory in the store), then delete the symlink and +instead make DIRECTORY a \"real\" directory containing symlinks." + (define (unsymlink link) + (let* ((target (readlink link)) + ;; TARGET might itself be a symlink, so append "/" to make sure + ;; 'scandir' enters it. + (files (scandir (string-append target "/") + (negate (cut member <> '("." "..")))))) + (delete-file link) + (mkdir link) + (for-each (lambda (file) + (symlink (string-append target "/" file) + (string-append link "/" file))) + files))) + + (catch 'system-error + (lambda () + (mkdir directory)) + (lambda args + (let ((errno (system-error-errno args))) + (if (= errno EEXIST) + (let ((stat (lstat directory))) + (case (stat:type stat) + ((symlink) + ;; "Unsymlink" DIRECTORY so that it is writable. + (unsymlink directory)) + ((directory) + #t) + (else + (error "cannot mkdir because a same-named file exists" + directory)))) + (apply throw args)))))) + +(define* (build-profile output inputs + #:key manifest search-paths) + "Build a user profile from INPUTS in directory OUTPUT. Write MANIFEST, an +sexp, to OUTPUT/manifest. Create OUTPUT/etc/profile with Bash definitions for +-all the variables listed in SEARCH-PATHS." + ;; Make the symlinks. + (union-build output inputs + #:log-port (%make-void-port "w")) + + ;; Store meta-data. + (call-with-output-file (string-append output "/manifest") + (lambda (p) + (pretty-print manifest p))) + + ;; Make sure we can write to 'OUTPUT/etc'. 'union-build' above could have + ;; made 'etc' a symlink to a read-only sub-directory in the store so we need + ;; to work around that. + (ensure-writable-directory (string-append output "/etc")) + + ;; Write 'OUTPUT/etc/profile'. + (build-etc/profile output search-paths)) + +;;; profile.scm ends here diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm index b62a8cce64..3585bf27a8 100644 --- a/guix/build/syscalls.scm +++ b/guix/build/syscalls.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; @@ -29,6 +29,7 @@ MS_REMOUNT MS_BIND MS_MOVE + restart-on-EINTR mount umount mount-points @@ -46,6 +47,7 @@ network-interface-address set-network-interface-flags set-network-interface-address + set-network-interface-up configure-network-interface)) ;;; Commentary: @@ -88,6 +90,19 @@ (ref bv)))) (lambda () 0))) +(define (call-with-restart-on-EINTR thunk) + (let loop () + (catch 'system-error + thunk + (lambda args + (if (= (system-error-errno args) EINTR) + (loop) + (apply throw args)))))) + +(define-syntax-rule (restart-on-EINTR expr) + "Evaluate EXPR and restart upon EINTR. Return the value of EXPR." + (call-with-restart-on-EINTR (lambda () expr))) + (define (augment-mtab source target type options) "Augment /etc/mtab with information about the given mount point." (let ((port (open-file "/etc/mtab" "a"))) @@ -203,7 +218,7 @@ constants from <sys/mount.h>." (let ((ret (proc (string->pointer device))) (err (errno))) (unless (zero? ret) - (throw 'system-error "swapff" "~S: ~A" + (throw 'system-error "swapoff" "~S: ~A" (list device (strerror err)) (list err))))))) @@ -552,4 +567,17 @@ the same type as that returned by 'make-socket-address'." (lambda () (close-port sock))))) +(define* (set-network-interface-up name + #:key (family AF_INET)) + "Turn up the interface NAME." + (let ((sock (socket family SOCK_STREAM 0))) + (dynamic-wind + (const #t) + (lambda () + (let ((flags (network-interface-flags sock name))) + (set-network-interface-flags sock name + (logior flags IFF_UP)))) + (lambda () + (close-port sock))))) + ;;; syscalls.scm ends here |